0. aptitude- package manager with a number of useful features, including a mutt-like package matching syntax, dselect-like persistence of user actions, the ability to view the Debian changelog of most packages, and a command-line mode similar to of apt-get.

2. reprepro- Tool for a local Debian package repository storing files in a pool/ dir. Including (partial) mirroring, strict checking of what comes in and signing of what gets out. Using libgpgme, zlib and libdb4.3, no database server needed.

3. DebPool - resurrected- DebPool is a package archiver designed with a goal of removing dependencies on code outside the core Debian system. It was written by Joel Aelwyn, but as he's inactive, this project was formed to continue development. We hope that he comes back soon!

5. FAI - Fully Automatic Installation- FAI is an automated installation tool to install Debian GNU/Linux on a Linux Cluster or a bunch of different hosts.
The official git repository is now hostsed on https://github.com/faiproject/fai

6. apt-proxy- apt-proxy automatically builds a Debian HTTP mirror based on requests which pass through the proxy. It's great for multiple Debian machines on the same network with a slower internet link.

7. BitTorrent Proxy for Debian Archive- This project will expand on the BitTorrent application to work effectively with large, constantly updating collections of files such as the Debian archive, and create a backend or proxy to the Debian package distribution tool apt to access it.

8. Debian Package Popularity Contest- The popularity-contest package sets up a cron job that will
periodically anonymously submit to the Debian developers
statistics about the most used Debian packages on this system.